Veteran broadcaster Paul Gambaccini has confirmed that he was arrested as part of the Metropolitan Police's Operation Yewtree investigation, and has denied all the allegations.
The 64-year-old was arrested by Metropolitan Police as part of the force's investigation into historic sexual offences.
BBC broadcaster Gambaccini denied the claims, saying in a statement: "On Monday night, 28 October, I attended an excellent production of the Kander and Ebb musical, the Scottsboro Boys, at the Young Vic theatre.
"It concerned a group of black men in Alabama in the 1930s who were falsely accused of sexual offences. Within hours, I was arrested by Operation Yewtree. Nothing had changed, except this time there was no music."
A spokesman for Gambaccini said: "Mr Gambaccini was interviewed by Operation Yewtree officers about historic allegations. He answered their questions and was co-operative. He denied all allegations."
Operation Yewtree is the national investigation prompted after claims were made against disgraced TV presenter Jimmy Savile.
Scotland Yard has led the probe, and separated its inquiries into those involving Savile, those involving Savile and others, and those involving others.